Aeroflex 429EX / ATG 429EX ARINC 429 Test Set – Features & Benefits | AvionTEq 09 June 2025 AvionTEq Blog Learn how the Aeroflex 429EX (ATG 429EX) simplifies ARINC 429 databus testing. Explore features, benefits, and purchase options at AvionTEq. Read now. [More] Share